Students of class 11 Chemistry should refer to MCQ Questions Class 11 Chemistry Chemical Bonding and Molecular Structure with answers provided here which is an important chapter in Class 11 Chemistry NCERT textbook. These MCQ for Class 11 Chemistry with Answers have been prepared based on the latest CBSE and NCERT syllabus and examination guidelines for Class 11 Chemistry. The following MCQs can help you to practice and get better marks in the upcoming class 11 Chemistry examination

Chapter 4 Chemical Bonding and Molecular Structure MCQ with Answers Class 11 Chemistry

MCQ Questions Class 11 Chemistry Chemical Bonding and Molecular Structure provided below have been prepared by expert teachers of grade 11. These objective questions with solutions are expected to come in the upcoming Standard 11 examinations. Learn the below provided MCQ questions to get better marks in examinations.

Question. Among the following, electron deficient molecule is
(a) CCl₄
(b) PCl₅
(c) BF₃
(d) SF₆

Question. Sodium chloride is soluble in water but not in benzene because
(a) ΔHHydration < ΔHLattice energy in water
    ΔHHydration > ΔHLattice energy in benzene
(b) ΔHHydration > ΔHLattice energy in water
    ΔHHydration < ΔHLattice energy in benzene
(c) ΔHHydration = ΔHLattice energy in water
    ΔHHydration < ΔHLattice energy in benzene
(d) ΔHHydration < ΔHLattice energy in water
    ΔHHydration = ΔHLattice energy in benzene

Question. Which of the following compounds contain(s) no covalent bond(s)?
KCl, PH₃,O₂, B₂H₆, H₂SO₄
(a) KCl₂, BH₆, PH₃
(b) KCl, H₂ SO₄  
(c) KCl
(d) KCl, B₂ H₆

Question. The % ionic character in Cs—Cl bond present in CsCl molecule will be, if the electronegativity values  or Cs and Cl are 0.8 and 3.0 respectively
(a) 62.9%
(b) 60%
(c) 75%
(d) 52.14%

Question. Which one of the following molecule is polar?
(a) XeF₄
(b) IF₅
(c) SbF₅
(d) CF₄

Question. Which of the following pairs has zero dipole moment?
(a) CH₂ Cl₂ and NF₃
(b) SiF₄ and BF₃
(c) PCl and ClF ₃
(d) BF₃ and NF  ₃

Question. Bond distance in HF is 9.17 10 m × −11 . Dipole moment of HF is 6.104 10 cm × −30 . The per cent ionic character in HF will be (electron charge = 1.60 × 10− C 19 )
(a) 61.0%
(b) 38.0%
(c) 35.5%
(d) 41.6%

Question. Among the following the maximum covalent character is shown by the compound 
(a) FeCl₂
(b) SnCl₂
(c) AlCl₃
(d) MgCl₂

Question. The correct statement for the molecule,CsI₃ is
(a) it is a covalent molecule 
(b) it contains Cs⁺ and I₃⁻
(c) It contains Cs₃⁺ and I⁻ ions
(d) it contains Cs⁺ ,I⁻ and lattice I₂ molecule

Question. Which of the following compounds has the smallest bond angle in its molecule?
(a) H₂O 
(b) H₂S
(c) NH₃
(d) SO₂

Question. Which of the following statement(s) is/are true?
(a) HF is less polar than HBr
(b) Absolutely pure water does not contain any ions
(c) Chemical bond formation takes place when forces of attraction overcome the forces of repulsion
(d) In covalency, transference of electrons take place

Question. Which of the following molecules/ions does not contain unpaired electrons ? 
(a) O₂^2-
(b) B₂
(c) N⁺₂
(d) O₂     

Question. Which of the following species has a bond order other than 3? 
(a) CO
(b) NO–
(c) NO⁺
(d) O⁺₂     

Question. The sequence that correctly describes the relative bond strength pertaining to oxygen molecule and its cation or anion is 
(a) O₂^2- ,> O₂^– > O₂ > O₂⁺
(b) O₂,> O₂⁺ > O₂^–> O₂^2-
(c) O₂⁺ ,> O₂ > O₂^2-> O₂^–
(d) O₂⁺ ,> O₂ > O^–₂ > O₂^2- 

Question. The bond order of o; is the same as in 
(a) N⁺₂
(b) CN^–
(c) CO
(d) NO⁺       

Question. Molecular orbital theory was given by 
(a) Kossel
(b) Mosley
(c) Mulliken
(d) Werner       

Question. What is the geometry of nitrogen atom inNH₃ , N(CH₃ )₃ and N[Si(CH₃ )₃ ]₃ molecules?
I. Trigonal planar
II. Trigonal pyramidal
III. Square planar
Choose the correct option.
(a) II, II and I
(b) III, III and I
(c) I, II and III
(d) I, III and II

Question. O₂ molecule is paramagnetic due to the presence of
(a) two unpaired electrons in anti-bonding MO
(b) one unpaired electron in anti-bonding MO
(c) two unpaired electrons in bonding MO
(d) one unpaired electron in bonding MO

Question. The BCl₃ is a planar molecule whereasNCl₃ is pyramidal because
(a) B—Cl bond is more polar than N—Cl bond
(b) N—Cl bond is more covalent that B—Cl bond
(c) nitrogen atom is smaller than boron atom
(d) BCl₃ has no lone pair electrons butNCl₃ has one lone pair of electrons

Question. H₂O  is dipolar whereas BeF₂ is not. It is because
(a) the electronegativity of F is greater than that of O
(b) H₂O involves hydrogen bonding whereas BeF₂ is angular discrete molecule
(c) H₂O is linear and BeF₂ is angular
(d) H₂O is angular and BeF₂ is linear

Question. In terms of polar character, which one of the following order is correct?
(a) NH₃ < H₂O < HF < H₂S 
(b) H₂S < NH₃ < HO < HF 
(c) H₂O < NH₃ < HS < HF 
(d) HF < H₂O < NH₃ < H₂S 

Question. What will be the lattice enthalpy of CaCl₂, if the enthalpy of
(i) sublimation energy of Ca is 121 kJmol⁻¹
(ii) dissociation energy of Cl₂ to Cl is 242.8 kJmol⁻¹
(iii) ionisation energy Ca to Ca₂+ is 2422 kJmol⁻¹
(iv) electron gain enthalpy for Cl to Cl^– is −355 kJ mol⁻¹
(v) ΔfH overall is −795 kJ mol⁻¹
(a) −3225.8 kJ mol⁻¹
(b) −980.8 kJ mol⁻¹
(c) −2870.8 kJ mol⁻¹
(d) −2628 kJ mol⁻¹

Question. Select the correct statement(s).
(a) Both lattice energy and hydration energy decrease with the increase in ionic size
(b) Lattice energy can be calculated using Born-Haber cycle
(c) If the anion is larger than the cation, the lattice energy will remain almost constant within a particular group
(d) All of the above statements are correct

Question. The bond dissociation energy of B—F in BF³ is 646 kJ mol⁻¹, whereas that of C—F in ^CF4 is 515 kJ mol⁻¹. The correct reason for higher B—F bond dissociation energy as compared to that of C—F bond is
(a)smaller size of B-atom as compared to that of C-atom
(b) stronger s bond between B and F in BF₃ as compared to that between C and F isCF₄
(c) significant pp-pp interaction between B and F in BF₃ whereas there is no possibility of such interaction between C and F in CF₄
(d) lower degree of pp-pp interaction betwen B and F in BF₃ than that between C and F inCF₄

Question. If H—X bond length is 2A ° and H−X bond has dipole moment 512 × 10⁻³⁰ . cm, the percentage  of ionic characters in the molecule will be
(a) 10%
(b) 16%
(c) 18%
(d) 20%

Question. The geometrical shapes of XeF₅⁺ , XeF₆ and XeF₈²⁻ respectively are
(a) trigonal bipyramidal, octahedral and square planar
(b) square pyramidal, distorted octahedral and square antiprismatic
(c) planar pentagonal, octahedral and square antiprismatic
(d) square pyramidal, distorted octahedral and octahedral

Question. The number of antibonding electron pairs in O^2-₂ molecular ion on the basis of molecular orbital theory is (Atomic number ofO is 8.) 
(a) 5
(b) 4
(c) 3
(d) 2         

Question. Which of the following is paramagnetic with bond order 0.5? 
(a) F₂
(b) H⁺₂
(c) N₂
(d) O^–₂       

Question. N₂ accept electron and convert into N;, where this electron goes? 
(a) Antibonding n-molecular orbital
(b) Bonding n-molecular orbital
(c) σ-bonding molecular oribital
(d) σ-antibonding molecular orbital       

Question. The formation of energy bonds in solids are in accordance with 
(a) Heisenberg’s uncertainty principle
(b) Bohr’s theory
(c) Ohm’s law
(d) Rutherford’s atomic model       

Question. Which of the following is isoelectronic with CO₂?
(a) NO₂
(b) NO 
(c) N₂O
(d) N₂O₄     

Question. Suppose the observed value of dipole moment of H₂O molecule is 1.83 D. What will be the H—O—H bond angle in H₂O  molecule? (Given bond moment of O—H bond is 1.5 D.)
(a) 104° 20¢¢
(b) 105°
(c) 105°20¢¢
(d) 104°

Question. Which one of the following molecules is/are expected to exhibited diamagnetic behaviour? 
(a) N₂
(b) O₂
(c) S₂
(d) C₂

Question. Which of the following statement(s) is/are correct?
(a) In the formation of dioxygen from oxygen atoms 10 molecular orbitals will be formed.
(b) All the molecular orbitals in the dioxygen will be completely filled
(c) Total number of bonding molecular orbitals will not be same as total number of anti-bonding orbitals  n dioxygen
(d) Number of filled bonding orbitals will be same as number of filled anti-bonding orbitals

Question. In accordance to molecular theory,
(a) O₂⁺ is diamagnetic and bond order is more thanO₂
(b) O₂⁺ is diamagnetic and bond order is less thanO₂
(c) O₂⁺ is paramagnetic and bond order is more thanO₂
(d) O₂⁺ is paramagnetic and bond order is less thanO₂

Question. Which of the following pairs of molecules/ions are not likely to exist?
(a) H₂⁺, He₂²⁻ 
(b) H₂⁻, He⁻²₂ 
(c) H₂²⁺ , He² 
(d) H₂⁻ , He²⁺₂

Question. Ortho-nitrophenol is less soluble in water than p-andm-nitrophenols because 
(a) o -nitrophenol is more steam volatile than those of m- and p -isomers
(b) o -nitrophenol shows intramolecular H-bonding
(c) o -nitrophenol shows intermolecular H-bonding
(d) melting point of o -nitrophenol is lower than those of m- and p-isomers

Question. Arrange the following molecules in the increasing order of bond angle.
H2O H2S H2Se H2Te I II III IV
(a) I < II < III < IV
(b) IV < III < II < I
(c) I < III <II < IV
(d) IV < II < III < I

Question. Consider the following iodides, PI3 102 ¾ °, AsI3 100.2, ¾ SbI3 99 ¾ ° The bond angle is maximum in P 3 I which is
(a) due to small size of phosphorus
(b) due to more bp-bp repulsion in P 3 I
(c) due to less electronegativity of phosphorus
(d) None of the above

Question. Bond energy of H—H, F—F and H—F bonds are 104, 38 and 135 kcal mol−1 respectively. The resonance energy in the H—F molecule will be
(a) 142 kcal mol−1
(b) 66 kcal mol−1
(c) 72.14 kcal mol−1
(d) 79.26 kcal mol−1

Question. The species in which the N-atom is in a state of sp- hybridisation is 
(a) NO2−
(b) NO3−
(c) NO2
(d) NO2+

Question. The d-orbital involved in sp³ d  -hybridisation is
(a) d_xy
(b) d_zx
(c) d_z2
(d) d_x2 −y²

Question. The states of hybridisation of boron and oxygen atoms in boric acid (H₃BO₃ ) are respectively
(a) sp₂ and sp₃
(b) sp₂ and sp₃
(c) sp₃ and sp₂
(d) sp₃ and sp₃

Question. Isostructural species are those which have the same shape and hybridisation. Among the given  pecies identify the isostructural pairs.
(a) NF₃ and BF ₃
(b) BF₄⁻ and NH₄⁺
(c) BCl₃ and BrCl₃
(d) NH₃ and NO^–₃

Question. In which of the following pairs the two species are not isostructural?
(a) CO₃²⁻ and NO₃⁻
(b) PCl₄⁺ and SiCl₄
(c) PF₅ and BrF₅
(d) AlF₆³⁻ and SF₆

Question. Total number of lone pair of electron in I₃⁻ ion is
(a) 3
(b) 6
(c) 9
(d) 2

Question. In XeF₂, XeF₄ and XeF₆, the number of lone pairs of Xe respectively are
(a) 2, 3, 1
(b) 1, 2, 3
(c) 4, 1, 2
(d) 3, 2, 1

Question. The structure of IF₇ is 
(a) square pyramidal
(b) trigonal bipyramidal
(c) octahedral
(d) pentagonal bipyramidal

Question. Which has trigonal bipyramidal shape?
(a) XeOF₄
(b) XeO₃
(c) XeO₃ F₂
(d) XeOF₂

Question. The shape of IF₆⁻ is 
(a) trigonally distorted octahedron
(b) pyramidal
(c) octahedral
(d) square antiprism

Question. The molecular shapes of SF₄ , CF₄ and XeF₄ are
(a) different with 1, 0 and 2 lone pairs of electrons on the central atoms, respectively
(b) different with 0, 1 and 2 lone pairs of electrons on the central atoms, respectively
(c) the same with 1, 1 and 1 lone pairs of electrons on the central atoms, respectively
(d) the same with 2, 0 and 1 lone pairs of electrons on the central atoms, respectively

Question. The structure of which of the following chloro species can be explained on the basis of dsp2- ybridisation ?
(a) PdCl₄²⁻
(b) FeCl₄²⁻
(c) CoCl₄²⁻
(d) NiCl₄²⁻

Question. XeO4 molecule is tetrahedral having
(a) two pΠ − dΠ bonds
(b) one pΠ − dΠ bond
(c) four pΠ − dΠ bonds
(d) three pΠ − dΠbonds

Question.Which of the following species is not paramagnetic?
(a) NO
(b) CO
(c)O₂
(d) B₂

We hope the above multiple choice questions for Class 11 Chemistry for Chapter 4 Chemical Bonding and Molecular Structure provided above with answers based on the latest syllabus and examination guidelines issued by CBSE, NCERT and KVS are really useful for you. Chemical Bonding and Molecular Structure is an important chapter in Class 11 as it provides very strong understanding about this topic. Students should go through the answers provided for the MCQs after they have themselves solved the questions. All MCQs have been provided with four options for the students to solve. These questions are really useful for benefit of class 11 students. Please go through these and let us know if you have any feedback in the comments section.